GENERAL DESCRIPTION
The PCD3360 is a CMOS integrated circuit, designed to replace the electro-mechanical bell in telephone sets. It meets most postal requirements, with selectivity of output tone sequences and input ringer frequencies. Output signals for a loudspeaker or for a piezo-electric (PXE) transducer are provided. No audio transformer is required since the loudspeaker is driven in class D.

FEATURES
• Output signals for electro-dynamic transducer (loudspeaker) or for piezo-electric transducer (PXE)
• 7 basic output frequencies (tones) and a pause
• 4 selectable tone sequences
• 4 selectable repetition rates
• 3 selectable impedance settings
• 3-step automatic swell
• Delta-modulated output signal that approximates a sinewave
• Input ringing frequency discriminator with selectable upper and lower frequency limits
• Output for optical signal
• Customized tone sequences, impedance settings and automatic swell levels are mask programmable.